Foam cushion base



FIG. 1 is a perspective view of a foam cushion base;

FIG. 2 is a front side view of the foam cushion base shown in FIG. 1; the rear side view being a mirror image thereof;

FIG. 3 is a top view of the foam cushion base shown in FIG. 1; and,

FIG. 4 is a right side view of the foam cushion base shown in FIG. 1; the left side view being a mirror image thereof.

The bottom of the foam cushion is plain and unadorned and therefore not shown. The foam cushion base is shown with symbolic breaks in its length and width. The appearance of any portion of the article between the break lines forms no part of the claimed design. The broken lines shown in the drawings are included for the purpose of illustrating portions of the article and form no part of the claimed design. 

CLAIM The ornamental design for foam cushion base, as shown and described. 